1242220344431 has 32 divisors (see below), whose sum is σ = 1410833514240. Its totient is φ = 1084097952000.

The previous prime is 1242220344367. The next prime is 1242220344433. The reversal of 1242220344431 is 1344430222421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1242220344431 - 2⁶ = 1242220344367 is a prime.

It is a super-2 number, since 2×1242220344431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242220344433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4655276 + ... + 4914878.

It is an arithmetic number, because the mean of its divisors is an integer number (44088547320).

Almost surely, 2^{1242220344431} is an apocalyptic number.

1242220344431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1242220344431 is a deficient number, since it is larger than the sum of its proper divisors (168613169809).

1242220344431 is a wasteful number, since it uses less digits than its factorization.

1242220344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259847.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1242220344431 its reverse (1344430222421), we get a palindrome (2586650566852).

The spelling of 1242220344431 in words is "one trillion, two hundred forty-two billion, two hundred twenty million, three hundred forty-four thousand, four hundred thirty-one".